// 实现一个函数ex3，使用safeProp和fp.first找到user的名字的首字母
const fp = require('lodash/fp');
const {Maybe, Container} = require('./support');
let safeProp = fp.curry(function (x, o) { return Maybe.of(o[x]) })
let user = { id: 2, name: "Albert" }
let ex3 = () => {
    return safeProp('name')(user).map(fp.first)._value
}
console.log(ex3())